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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is transformer

Hofincons,

7 4150

in transformers for ex. 100mva and 400kv the secondary current is about 420 amps but for selection of bushing the capacity of selected bushing is 2000A why there is such big difference ?

ABB,

2 3040

why potetial transformer primary ground?

1 2392

what is creepage distance in sub-station?

ABB,

3 7037

what is vibration?

2 2195

how can we make cable shedule for controll wiring ? which details must be required for it.?

L&T,

1131

How can we decide the fualt levels of sub-stations?

Bhel, Enercon, Prakash Industries,

2 5450

what difference between tapping -15% to +5 % and -5% to +15% tap. & how can define HV turns on maximun & minimum tap of power transformer.

2 2827

what is the difference between "Rotary bypass isolation switch and Normal bypass switch" pls share indepth techs?

1096

ohms law is applicable for dc or ac current or for both??? explain it berifly??

3 3513

what will happen if we directly give supply to rotor of a induction motor?

1 2327

Can anyone provide with a SLD for HT panel installation for a 33KV line and distribution end has three 1.5MV transformers. Is it suitable to use OCB or VCB and also provide me the suitable rating and its connection diagram.

TATA,

2371

nwhat are the main Components of servo motor?

BARC,

1133

What are the classification of Servo Motor?

BARC,

4 7529

What are the function of different components of servo motor?

BARC, Parle,

1082


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Un-Answered Questions { Electrical Engineering }

1. what is usage for power factor in industries?? 2.why we need to monitor power factor??

5267


What is meant by Low Resistance Cable and High Resistance Cable.

963


Differentiate between real and apparent power?

153


explain all the classes with example

992


In 90 kva alternator that produce the output voltage is 115(p-n),200(p-p) at 1500 rpms means what ampere it produced ?

1063






what is the standard duration after failure EB power

868


can u please mail me the syllabus for GET exam for damodar valley corporation?

1145


How much ph is maintained of water electrolyte which is used in LRS for 1200 kw slipring induction motor ?

744


draw the full wave and half wave circuit of 3 phase system and inverter circuit used in upsĀ 

1440


1. Can a 12v DC choke operate a 60v/12w PL lamp ? 2. Can a 230v ballast fire / operate a 60v/12w PL lamps.

1320


what mean by analog ,digital,numerical meters and relays? say the example?

1149


lenz law application and define

1688


Define ampere

173


What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer?

1107


how to calculate kvar in Akiva

977